241AM 241CM EC DECAY 1974PO08 15NDS 201512
241AM H TYP=FUL$AUT=C.D. NESARAJA$CIT=NDS 130, 183 (2015)$CUT=30-Sep-2015$
241AM c 1974Po08: {+241}Cm source prepared by irradiating {+239}Pu with 40 MeV
241AM2c |a particles at the Argonne 60-in. cyclotron. Following decay and
241AM3c chemical separation, Cm was prepared for electron and |g spectroscopy
241AM4c in the Argonne electromagnetic isotope separator. |g-rays were
241AM5c measured with Ge(Li) detectors with FWHM=600 keV at the 100 keV |g-ray
241AM6c energy. Conversion electron lines were measured with the Argonne
241AM7c toroidal-filed spectrometer (FWHM=0.05 %). Measured |g|g-coincidence
241AM8c Ge(Li) diodes.
241AM cE IE$Deduced from the requirement of an intensity balance at each level
241AM cG $The |g|g coincidence relationships shown on the decay scheme drawing
241AM2cG are from 1974Po08
241AM cG $===================================================================
241AM tG $X rays: 1974Po08
241AM2tG E(x ray) I(x ray)
241AM3tG (% per |e decay)
241AM4tG -------------------------------------------------------------
241AM5tG 102.024 {I20} 23.2 {I14} K|a{-2}| x ray
241AM6tG 106.465 {I20} 36.8 {I21} K|a{-1}| x ray
241AM7tG 119.255 {I30} 4.5 K|b{-3} x ray
241AM8tG 120.274 {I30} 9.4 K|b{-1} x ray
241AM9tG 123.750 {I30} 3.8 K|b{-2} x ray+K|b{-4} x ray
241AMatG 124.816 {I30} 1.1 K-O{-23} x ray
241AM cG $===================================================================
241AM cG E$From 1974Po08
241AM cG RI$From 1974Po08, except where calculated from ce data as noted
241AM cG M,MR$From subshell ratios and |a data of 1974Po08 as reanalyzed by the
241AM2cG evaluator using the "frozen orbital hole" internal conversion
241AM3cG coefficient calculations of 2008Ki07. The authors' Ice data
241AM4cG have been normalized to the I|g data by requiring I|g for the
241AM5cG 132.4, 165.0, and 205.9 transitions to equal the I|g calculated
241AM6cG from the ce data. The 132.4 and 165.0 keV K lines were not used in
241AM7cG the normalization due to apparent disparities in the |a (see author's
241AM8cG explanation in 1974Po08. Multi-polarities and mixing ratios for these
241AM9cG transitions have been deduced from subshell ratios. The ce data given
241AMacG below are the authors' values from their Table II. In their analysis,
241AMbcG these are intensities per 100 |e decays, as are the I|g values from
241AMccG their Table I, adopted here. The evaluator's reanalysis requires that
241AMdcG the ce intensities be lowered by the factor 1/1.09 in order to remain
241AMecG as intensities per 100 decays. Where the ce data have been used to
241AMfcG obtain |a values, I|g values, or summed to obtain total intensities,
241AMgcG they have been lowered by this factor
241AM cG E(A)$Transition observed only in |g|g coincidence
241AM cG M(B)$Probable anomalous conversion. See 1974Po08 for discussion
241AM2cG and for calculation of penetration effects
241AM DG CC$FROM BrIcc v2.3a (30-Jun-2013) 2008Ki07, "Frozen Orbitals" appr.
241AM CG MR$IF NO VALUE GIVEN IT WAS ASSUMED MR=1.00 FOR E2/M1
241AM cL E$From least-squares fit (by evaluator) to E|g data
241AM cL J$From Adopted Levels
241AM CL BAND(A) 5/2[523]
241AM CL BAND(B) 5/2[642]
241AM CL BAND(C) 3/2[521]
241AM CL BAND(D) 1/2[400]?
241AM CL BAND(E) 1/2[530]
241AM CL BAND(F) 3/2[651]
241CM P 0.0 1/2+ 32.8 D 2 767.4 12
241CM cP J$From Adopted Levels in {+241}Cm
241CM cP T$From least squares decay analyses of the 471.8 keV |g.
241CM cP QP$From 2012Wa38
241AM N 1.00 1.00 0.990 1 1.00
241AM PN 0.990 1 0.990 3
241AM cN NR$Photon intensities per 100 |e decays are obtained from the
241AM2cN requirement that |SI(|g+ce)=100 for transitions feeding the g.s. band,
241AM3cN namely, the g.s., 41, and 94 levels. With this normalization one
241AM4cN gets K|a{-2}| x ray and K|a{-1}| x ray intensities of 22.4 {I20} and
241AM5cN 36 {I4}, respectively, in good agreement with the measured values
241AM6cN listed above, and thus consistent with the assumption of negligible |e
241AMxcN feeding to the g.s.
241AM L 0.0 5/2- 432.6 Y 6
241AM cL T$From Adopted Levels
241AM2 L FLAG=A$
241AM L 41.176 3 7/2-
241AM2 L FLAG=A$
241AM G 41.176 3 0.017 4M1+E2 0.486 23 295 17
241AMS G LC=216 13$MC=59 4
241AMS G NC=16.2 10$OC=3.90 23$PC=0.64 4$QC=0.01151 20
241AM cG M$L1:L2:L3:M1:M2:=0.90 {I19}:1.76 {I16}:1.20 {I6}:0.16 {I5}:0.42 {I5}
241AM cG TI$From the measured I|g, and the deduced |a one gets I(|g+ce)=5.0
241AM2cG {I12} compared with a feeding of the 41 level of |SI(|g+ce)=6.5 {I3}
241AM L 93.65 10 9/2-
241AM2 L FLAG=A$
241AM L 205.883 10 5/2+
241AM2 L FLAG=B$
241AM G 164.8 2 0.44 9 [E1] 0.1635 C
241AM2 G FLAG=A$
241AMS G KC=0.1255 18$LC=0.0285 4$MC=0.00699 10
241AMS G NC=0.00189 3$OC=0.000463 7$PC=8.08E-5 12$QC=3.52E-6 5
241AM G 205.879 13 2.70 15E1 0.0980 C
241AMS G KC=0.0761 11$LC=0.01647 23$MC=0.00402 6
241AMS G NC=0.001091 16$OC=0.000268 4$PC=4.75E-5 7$QC=2.19E-6 3
241AM cG M$K:L1::L2=22 {I2}:0.031 {I5}:0.015 {I5}
241AM L 471.810 9 3/2-
241AM2 L FLAG=C$
241AM E 26 6 7.62 10
241AMS E CK=0.5782 14$CL=0.3022 9$CM+=0.1195 5
241AM G 265.922 12 0.40 4 [E1] 0.0552 2.6 2 C
241AM2 G FLAG=B$
241AMS G K/T=0.0410 6$L/T=0.00847 12$M/T=0.00206 3
241AMS G N/T=0.000560 8$O/T=0.0001380 20$P/T=2.48E-5 4$Q/T=1.217E-6 17
241AMS G KC=0.0433 6$LC=0.00894 13$MC=0.00218 3
241AMS G NC=0.000590 9$OC=0.0001456 21$PC=2.62E-5 4$QC=1.284E-6 18
241AM cG M$K:L1:L2:L3:M1:M2=1.74 {I18}:0.35 {I3}:0.15 {I3}: |<0.02:0.12
241AMxcG {I2}:0.023 {I14}
241AM cG TI$From sum of Ice and I|g
241AM G 430.634 20 4.10 20E2 0.0805 C
241AMS G KC=0.0416 6$LC=0.0285 4$MC=0.00767 11
241AMS G NC=0.00211 3$OC=0.000514 8$PC=8.88E-5 13$QC=2.08E-6 3
241AM cG M$K:L1=0.208 {I13}:0.034 {I8}. |a(K)exp=0.047 {I4}
241AM G 471.805 20 72 3 M1+E2 0.22 16 87 5 C
241AM2 G FLAG=B$
241AMS G K/T=0.14 10$L/T=0.033 16$M/T=0.008 4
241AMS G N/T=0.0023 11$O/T=0.0006 3$P/T=0.00010 6$Q/T=6.E-6 5
241AMS G KC=0.17 14$LC=0.040 20$MC=0.010 5
241AMS G NC=0.0028 12$OC=0.0007 4$PC=0.00013 7$QC=7.E-6 6
241AM cG M$K:L1:L2:L3:M1:M2:N1:N2:N3:O1=13.1 {I4}:1.91 {I9}:0.38 {I2}: |<0.08:
241AM2cG 0.46 {I3}:0.14 {I3}:0.135 {I12}: |<0.005:0.052 {I15}
241AM cG TI$From sum of Ice and I|g
241AM L 504.448 9 5/2-
241AM2 L FLAG=C$
241AM E 2.3 21 7.8 4 1U?
241AMS E CK=0.209 3$CL=0.5385 19$CM+=0.2522 12
241AM G 32.639 3 0.21 3 M1+E2 0.124 4 220 5 45.0 13
241AMS G L/T=0.741 12$M/T=0.188 6
241AMS G N/T=0.0515 16$O/T=0.0128 4$P/T=0.00233 7$Q/T=0.000116 3
241AMS G LC=163 4$MC=41.4 10
241AMS G NC=11.4 3$OC=2.82 6$PC=0.513 11$QC=0.0257 4
241AM cG M$L1:L2:L3:M1:M2:M3:M4:M5:N1:N2:N3:N4:N5:O1:O2:O3:P1:=24.7 {I13}:7.9
241AM2cG {I4}: 4.9 {I2}:5.6 {I3}:1.50 {I18}:0.94 {I14}:9: |<0.04: |<0.03:1.71
241AM3cG {I8}:0.47 {I4}:0.28 {I4}: |<0.08: |<0.08:0.39 {I2}:0.16 {I2}:0.08
241AMxcG {I2}:0.12 {I2}
241AM cG RI$The calculated value from I(|g+ce) and |a is 0.204 {I9}
241AM cG TI$From sum of Ice and I|g
241AM G 298.57 5 0.08 2 [E1] 0.0429 0.14 4 C
241AM2 G FLAG=B$
241AMS G K/T=0.0324 5$L/T=0.00655 10$M/T=0.001594 23
241AMS G N/T=0.000433 6$O/T=0.0001068 15$P/T=1.93E-5 3$Q/T=9.73E-7 14
241AMS G KC=0.0338 5$LC=0.00684 10$MC=0.001662 24
241AMS G NC=0.000451 7$OC=0.0001114 16$PC=2.02E-5 3$QC=1.015E-6 15
241AM cG TI$From sum of Ice and I|g
241AM G 410.8 1 0.087 9 [E2] 0.0910
241AMS G KC=0.0452 7$LC=0.0335 5$MC=0.00905 13
241AMS G NC=0.00249 4$OC=0.000606 9$PC=0.0001044 15$QC=2.31E-6 4
241AM G 463.273 20 1.24 8 M1+E2 0.23 17 1.52 13 C
241AM2 G FLAG=B$
241AMS G K/T=0.14 10$L/T=0.034 17$M/T=0.009 4
241AMS G N/T=0.0024 11$O/T=0.0006 3$P/T=0.00011 6$Q/T=6.E-6 5
241AMS G KC=0.18 14$LC=0.042 21$MC=0.011 5
241AMS G NC=0.0029 13$OC=0.0007 4$PC=0.00013 7$QC=7.E-6 6
241AM cG TI$From sum of Ice and I|g
241AM cG M$K:L1=0.242 {I18}:0.035 {I8}
241AM G 504.45 3 0.60 4 M1+E2 0.18 13 0.67 4 C
241AM2 G FLAG=B$
241AMS G K/T=0.12 9$L/T=0.028 14$M/T=0.007 4
241AMS G N/T=0.0019 9$O/T=0.00048 23$P/T=9.E-5 5$Q/T=5.E-6 4
241AMS G KC=0.14 11$LC=0.033 17$MC=0.008 4
241AMS G NC=0.0023 11$OC=0.0006 3$PC=0.00011 6$QC=6.E-6 5
241AM cG TI$From sum of Ice and I|g
241AM L 623.10 4 (1/2+)
241AM2 L FLAG=D$
241AM E 0.62 5 8.22 4
241AMS E CK=0.078 8$CL=0.632 5$CM+=0.289 3
241AM G 151.4 4 0.02 AP[E1] 0.199 C
241AM2 G FLAG=A$
241AMS G KC=0.1519 24$LC=0.0353 6$MC=0.00866 14
241AMS G NC=0.00234 4$OC=0.000572 9$PC=9.92E-5 16$QC=4.22E-6 7
241AM G 417.24 4 0.66 4 E2 0.0874 C
241AMS G KC=0.0440 7$LC=0.0318 5$MC=0.00857 12
241AMS G NC=0.00236 4$OC=0.000573 8$PC=9.89E-5 14$QC=2.23E-6 4
241AM cG M$Ice(K)=0.040 {I16}. |a(K)exp=0.056 {I23} gives mult=E2(+M1) with
241AM2cG |d>3.1. The placement in the level scheme requires |DJ=2
241AM G 623.1 3 0.012 3 [M2] 0.433
241AMS G KC=0.322 5$LC=0.0821 12$MC=0.0207 3
241AMS G NC=0.00571 8$OC=0.001435 21$PC=0.000272 4$QC=1.650E-5 24
241AM L 636.861 10 3/2-
241AM2 L FLAG=E$
241AM E 42.6 21 6.251 25
241AMS E CK=0.009 4$CL=0.6729 20$CM+=0.3184 20
241AM G 132.413 7 3.9 2M1+E2 0.061 +13-1712.94 45.0 16 C
241AMS G K/T=0.728 7$L/T=0.151 3$M/T=0.0368 7
241AMS G N/T=0.01005 20$O/T=0.00253 5$P/T=0.000483 10$Q/T=3.06E-5 6
241AMS G KC=10.15 15$LC=2.10 3$MC=0.512 8
241AMS G NC=0.1401 20$OC=0.0353 5$PC=0.00674 10$QC=0.000427 6
241AM cG M$K:L1:L2:L3:M1:M2:N1:N2:N3:O1:O23:P1=33.0 {I16}:7.7 {I4}:1.00
241AM2cG {I7}:0.056 {I11}: 1.85 {I8}:0.27 {I9}:0.56 {I3}:0.082 {I22}:
241AMxcG |<0.02:0.153 {I14}: |<0.02:0.054 {I22}.
241AM cG MR$From L3/L1 and L3/L2. All other ratios give only upper limits,
241AM2cG the largest being 0.20
241AM cG TI,MR,CC$The adopted I(|g+ce)=45.0 {I16} is from the sum of Ice and
241AM2cG I|g. The |d value gives |a=12.94 which, along with the measured
241AM3cG I|g value of 3.9 {I2}, gives I(|g+ce)=54 {I3}. The difference between
241AM4cG these two values of I(|g+ce) lies with Ice(K). From K/L=4.84 {I10} one
241AM5cG expects Ice(K)=42.4 {I21}, compared with the experimental value of
241AM6cG 33.0 {I16}. Expressed another way, |a(K)exp is 22% {I6} lower than the
241AM7cG theoretical value. See the authors' comment on this discrepancy. From
241AM8cG an intensity balance at the 504 level, one gets an upper limit on
241AM9cG I(|g+ce)(132|g) of 47.4 {I13}. This I(|g+ce), along with I|g, gives an
241AMAcG upper limit on |a of 11.2 {I6}, corresponding to |d|>0.53 {I10}, a
241AMBcG value inconsistent with those from the ce ratios (excluding the K
241AMCcG shell), all of which are <0.2. The smaller than expected Ice(K) leads
241AMDcG to consistency with the intensity balance, but at the same time leads
241AMEcG to an |a anomaly that needs to be investigated
241AM G 165.049 8 3.0 2M1+E2 0.21 3 6.75 12 20.2 8 C
241AMS G K/T=0.678 7$L/T=0.145 3$M/T=0.0355 8
241AMS G N/T=0.00972 20$O/T=0.00244 5$P/T=0.000463 10$Q/T=2.83E-5 7
241AMS G KC=5.26 10$LC=1.122 16$MC=0.276 4
241AMS G NC=0.0754 11$OC=0.0189 3$PC=0.00359 5$QC=0.000219 4
241AM cG M$K:L1:L2:L3:M1:M2:N1:N2:O1:P1=14.0 {I7}:2.95 {I15}:0.49 {I3}:0.068
241AM2cG {I19}:0.75 {I6}: 0.14 {I6}:0.20 {I2}:0.044 {I9}:0.07 {I2}: |<0.04
241AM cG TI,CC$I(|g+ce) is from a sum of Ice and I|g. |d gives |a=6.75 {I12},
241AM2cG which, along with I|g, gives I(|g+ce)=23.2 {I16}, compared with the
241AM3cG experimental sum of 20.2 {I7}. Similarly as for the 132|g,
241AM4cG |a(K)exp(165|g) is smaller than the theoretical value, in this case by
241AM5cG 15% {I7}. See the authors' comment on this discrepancy
241AM G 430 1 0.04 AP [E1] 0.0200 C
241AMS G KC=0.01598 24$LC=0.00306 5$MC=0.000739 11
241AMS G NC=0.000201 3$OC=4.99E-5 8$PC=9.17E-6 14$QC=4.97E-7 8
241AM G 595.8 3 0.015 3 [E2] 0.0373
241AMS G KC=0.0236 4$LC=0.01010 15$MC=0.00265 4
241AMS G NC=0.000728 11$OC=0.000178 3$PC=3.17E-5 5$QC=1.050E-6 15
241AM G 636.88 3 1.55 11 M1+E2 0.59 18 0.133 16
241AMS G KC=0.104 13$LC=0.0217 21$MC=0.0053 5
241AMS G NC=0.00145 14$OC=0.00036 4$PC=6.9E-5 7$QC=4.2E-6 5
241AM cG MR$From |a(K)exp. |a(L1)exp gives |d=0.60 {I46}
241AM cG M$K:L1=0.176 {I18}:0.030 {I8}
241AM L 652.089 10 (1/2)-
241AM2 L FLAG=E$
241AM E 27.0 12 6.318 23
241AMS E CL=0.6686 10$CM+=0.3314 10
241AM G 15.228 2 0.0548 25M1+E2 0.0302 14 437 8 24.0 11
241AMS G M/T=0.736 9
241AMS G N/T=0.202 5$O/T=0.0505 12$P/T=0.00951 22$Q/T=0.000568 13
241AMS G MC=322 6
241AMS G NC=88.3 15$OC=22.1 4$PC=4.16 7$QC=0.249 4
241AM cG RI$From I(|g+ce) and |a
241AM cG TI$From Ice(M) and (1+|a)/ce(M)=1.357. The authors Ice values sum
241AM2cG to 24.8 {I7}; however, the intensities of the N1, N2, O1 and higher
241AM3cG components had to be calculated, and one notes that Ice(P1)/Ice(M1)=
241AM4cG 0.030 {I4} compared with the theoretical values of 0.0135 {I3} and
241AM5cG 0.0154 {I3} for M1 and E2, respectively
241AM cG M$M1:M2:M3:N3:O2:P1=15.3 {I7}:3.0 {I3}:1.0 {I1}:0.51 {I15}:0.21
241AMxcG {I6}:0.46 {I5}
241AM G 29.02 5 0.030 6[E1] 3.42
241AMS G LC=2.54 4$MC=0.663 10
241AMS G NC=0.177 3$OC=0.0404 6$PC=0.00542 8$QC=0.0001288 19
241AM G 147.67 3 0.0132 12[E2] 3.08
241AMS G KC=0.185 3$LC=2.10 3$MC=0.589 9
241AMS G NC=0.1629 23$OC=0.0390 6$PC=0.00631 9$QC=3.40E-5 5
241AM cG RI$From Ice(L2)=0.0170 {I15} and |a(L2)=1.292 {I19}.
241AM2cG The authors give Ice(L2)=0.027 {I10} and Ice(L3)|<0.011. The evaluator
241AM3cG has used the L2/L3 theory value for E2 of 1.85 {I4} to deduce
241AM4cG Ice(L2)|<0.020 and thus Ice(L2)=0.017 to 0.020. The evaluator adopts
241AM5cG Ice(L2)=0.0185 {I15} which, in the evaluators' units, becomes
241AM6cG 0.0170 {I15}
241AM cG M$K:L1:L2:L3= |<0.33: |<0.01:0.027 {I10}: |<0.011
241AM G 180.277 8 0.48 4 M1(+E2) 0.25 LT 5.31 14 C
241AMS G KC=4.15 14$LC=0.868 13$MC=0.212 4
241AMS G NC=0.0581 9$OC=0.01460 21$PC=0.00278 4$QC=0.000172 6
241AM cG M$K:L1:M1=2.09 {I11}:0.42 {I2}:0.104 {I15}
241AM G 652.1 4 0.04 1 [E2] 0.0306
241AMS G KC=0.0201 3$LC=0.00777 11$MC=0.00202 3
241AMS G NC=0.000555 8$OC=0.0001364 20$PC=2.44E-5 4$QC=8.76E-7 13
241AM L 653.23 4 3/2+
241AM2 L FLAG=D$
241AM E 0.313 25 8.24 4
241AMS E CL=0.6677 10$CM+=0.3323 10
241AM G 447.35 4 0.120 15 M1+E2 0.77 LT 0.37 7 C
241AMS G KC=0.29 6$LC=0.061 9$MC=0.0149 19
241AMS G NC=0.0041 6$OC=0.00102 14$PC=0.00019 3$QC=1.17E-5 23
241AM cG M$|a(K)exp=0.30 {I8}
241AM G 653.2 2 0.15 1 [E1] 0.00898
241AMS G KC=0.00724 11$LC=0.001313 19$MC=0.000316 5
241AMS G NC=8.57E-5 12$OC=2.14E-5 3$PC=3.99E-6 6$QC=2.32E-7 4
241AM L 670.24 8 3/2+
241AM2 L FLAG=F$
241AM E 0.68 5 7.74 4
241AMS E CL=0.6512 15$CM+=0.3488 15
241AM G 464.36 8 0.086 14M1+E2 1.5 +17-5 0.17 8 C
241AM2 G FLAG=A$
241AMS G KC=0.12 6$LC=0.034 9$MC=0.0088 21
241AMS G NC=0.0024 6$OC=0.00059 15$PC=0.00011 3$QC=5.1E-6 24
241AM cG M$|a(K)exp=0.12 {I6}
241AM G 670.2 2 0.58 4 [E1] 0.00856
241AMS G KC=0.00691 10$LC=0.001250 18$MC=0.000300 5
241AMS G NC=8.16E-5 12$OC=2.04E-5 3$PC=3.80E-6 6$QC=2.22E-7 4